Oh jeez.
Brown looks at your standardized test scores in context with your high school and family situation, A student who goes to a small high school (particularly if its rural or inner-city), whose parents didn’t go to college (I don’t know if that applies to this student), will be looked at very differently than a kid from Dalton with parents with PhDs.
I’m not saying that the OP will get in. And yes, 27 is on the low end. But there have been kids with 27 ACTs and low 600 SATs who have gone to Brown and did just fine academically. Perhaps not first semester. But if they sought the necessary tutoring and writing help, they eventually did catch up.
@arodriguez282, you sound like a great kid who will do fine in college. In fact, you’ve already proven you can do college-level work. You’ve clearly challenged yourself academically, which is something many elite schools like Brown are looking for. You may not get into Brown because it’s so darn competitive, but I’m pretty sure that if you did get in, you could handle the work.